java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label30_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 19:28:53,821 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 19:28:53,823 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 19:28:53,835 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 19:28:53,835 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 19:28:53,836 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 19:28:53,838 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 19:28:53,839 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 19:28:53,841 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 19:28:53,842 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 19:28:53,842 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 19:28:53,843 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 19:28:53,844 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 19:28:53,844 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 19:28:53,846 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 19:28:53,846 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 19:28:53,847 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 19:28:53,849 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 19:28:53,851 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 19:28:53,852 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 19:28:53,853 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 19:28:53,855 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 19:28:53,857 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 19:28:53,857 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 19:28:53,857 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 19:28:53,858 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 19:28:53,859 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 19:28:53,860 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 19:28:53,861 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 19:28:53,862 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 19:28:53,862 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 19:28:53,863 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 19:28:53,863 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 19:28:53,863 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 19:28:53,864 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 19:28:53,865 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 19:28:53,865 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 19:28:53,880 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 19:28:53,880 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 19:28:53,881 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 19:28:53,881 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 19:28:53,881 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 19:28:53,881 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 19:28:53,882 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 19:28:53,882 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 19:28:53,882 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 19:28:53,882 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 19:28:53,882 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 19:28:53,883 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 19:28:53,883 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 19:28:53,883 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 19:28:53,884 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 19:28:53,884 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 19:28:53,884 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 19:28:53,884 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 19:28:53,884 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 19:28:53,885 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 19:28:53,885 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 19:28:53,885 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 19:28:53,885 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 19:28:53,885 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 19:28:53,886 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 19:28:53,886 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 19:28:53,887 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 19:28:53,887 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 19:28:53,888 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 19:28:53,888 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 19:28:53,888 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 19:28:53,888 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 19:28:53,888 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 19:28:53,888 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 19:28:53,935 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 19:28:53,948 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 19:28:53,952 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 19:28:53,953 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 19:28:53,954 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 19:28:53,954 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label30_true-unreach-call_false-termination.c [2018-10-24 19:28:54,014 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2433ed311/8c9e32e1bbb64c3dbbc553638e16654f/FLAG28e35ba8f [2018-10-24 19:28:54,627 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 19:28:54,633 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label30_true-unreach-call_false-termination.c [2018-10-24 19:28:54,651 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2433ed311/8c9e32e1bbb64c3dbbc553638e16654f/FLAG28e35ba8f [2018-10-24 19:28:54,671 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2433ed311/8c9e32e1bbb64c3dbbc553638e16654f [2018-10-24 19:28:54,683 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 19:28:54,685 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 19:28:54,686 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 19:28:54,686 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 19:28:54,690 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 19:28:54,691 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:28:54" (1/1) ... [2018-10-24 19:28:54,695 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10a92af9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:28:54, skipping insertion in model container [2018-10-24 19:28:54,695 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:28:54" (1/1) ... [2018-10-24 19:28:54,706 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 19:28:54,785 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 19:28:55,216 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:28:55,221 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 19:28:55,359 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:28:55,385 INFO L193 MainTranslator]: Completed translation [2018-10-24 19:28:55,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:28:55 WrapperNode [2018-10-24 19:28:55,386 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 19:28:55,387 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 19:28:55,387 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 19:28:55,387 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 19:28:55,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:28:55" (1/1) ... [2018-10-24 19:28:55,418 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:28:55" (1/1) ... [2018-10-24 19:28:55,578 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 19:28:55,579 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 19:28:55,579 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 19:28:55,579 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 19:28:55,591 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:28:55" (1/1) ... [2018-10-24 19:28:55,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:28:55" (1/1) ... [2018-10-24 19:28:55,603 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:28:55" (1/1) ... [2018-10-24 19:28:55,604 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:28:55" (1/1) ... [2018-10-24 19:28:55,646 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:28:55" (1/1) ... [2018-10-24 19:28:55,663 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:28:55" (1/1) ... [2018-10-24 19:28:55,675 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:28:55" (1/1) ... [2018-10-24 19:28:55,687 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 19:28:55,693 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 19:28:55,693 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 19:28:55,693 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 19:28:55,695 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:28:55" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 19:28:55,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 19:28:55,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 19:28:55,787 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 19:28:55,787 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 19:28:55,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 19:28:55,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 19:28:55,788 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 19:28:55,788 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 19:28:59,300 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 19:28:59,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:28:59 BoogieIcfgContainer [2018-10-24 19:28:59,301 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 19:28:59,308 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 19:28:59,309 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 19:28:59,313 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 19:28:59,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 07:28:54" (1/3) ... [2018-10-24 19:28:59,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24665d28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:28:59, skipping insertion in model container [2018-10-24 19:28:59,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:28:55" (2/3) ... [2018-10-24 19:28:59,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24665d28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:28:59, skipping insertion in model container [2018-10-24 19:28:59,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:28:59" (3/3) ... [2018-10-24 19:28:59,318 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label30_true-unreach-call_false-termination.c [2018-10-24 19:28:59,328 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 19:28:59,341 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 19:28:59,360 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 19:28:59,404 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 19:28:59,404 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 19:28:59,404 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 19:28:59,405 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 19:28:59,405 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 19:28:59,405 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 19:28:59,405 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 19:28:59,406 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 19:28:59,434 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states. [2018-10-24 19:28:59,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-10-24 19:28:59,451 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:28:59,453 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:28:59,455 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:28:59,463 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:28:59,463 INFO L82 PathProgramCache]: Analyzing trace with hash -564012609, now seen corresponding path program 1 times [2018-10-24 19:28:59,466 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:28:59,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:28:59,520 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:28:59,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:28:59,520 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:28:59,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:29:00,164 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 19:29:00,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:29:00,297 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:29:00,297 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 19:29:00,298 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:29:00,305 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 19:29:00,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 19:29:00,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:29:00,325 INFO L87 Difference]: Start difference. First operand 237 states. Second operand 3 states. [2018-10-24 19:29:02,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:29:02,281 INFO L93 Difference]: Finished difference Result 618 states and 1056 transitions. [2018-10-24 19:29:02,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 19:29:02,282 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 135 [2018-10-24 19:29:02,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:29:02,303 INFO L225 Difference]: With dead ends: 618 [2018-10-24 19:29:02,303 INFO L226 Difference]: Without dead ends: 379 [2018-10-24 19:29:02,310 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:29:02,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2018-10-24 19:29:02,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2018-10-24 19:29:02,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2018-10-24 19:29:02,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 621 transitions. [2018-10-24 19:29:02,402 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 621 transitions. Word has length 135 [2018-10-24 19:29:02,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:29:02,403 INFO L481 AbstractCegarLoop]: Abstraction has 379 states and 621 transitions. [2018-10-24 19:29:02,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 19:29:02,404 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 621 transitions. [2018-10-24 19:29:02,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-10-24 19:29:02,415 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:29:02,415 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:29:02,415 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:29:02,416 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:29:02,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1268148278, now seen corresponding path program 1 times [2018-10-24 19:29:02,416 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:29:02,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:29:02,418 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:29:02,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:29:02,418 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:29:02,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:29:02,665 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:29:02,665 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:29:02,666 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 19:29:02,666 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:29:02,668 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 19:29:02,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 19:29:02,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 19:29:02,669 INFO L87 Difference]: Start difference. First operand 379 states and 621 transitions. Second operand 6 states. [2018-10-24 19:29:04,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:29:04,761 INFO L93 Difference]: Finished difference Result 1231 states and 2094 transitions. [2018-10-24 19:29:04,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 19:29:04,768 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 151 [2018-10-24 19:29:04,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:29:04,781 INFO L225 Difference]: With dead ends: 1231 [2018-10-24 19:29:04,781 INFO L226 Difference]: Without dead ends: 858 [2018-10-24 19:29:04,791 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 19:29:04,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2018-10-24 19:29:04,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 821. [2018-10-24 19:29:04,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 821 states. [2018-10-24 19:29:04,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1290 transitions. [2018-10-24 19:29:04,861 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1290 transitions. Word has length 151 [2018-10-24 19:29:04,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:29:04,862 INFO L481 AbstractCegarLoop]: Abstraction has 821 states and 1290 transitions. [2018-10-24 19:29:04,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 19:29:04,862 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1290 transitions. [2018-10-24 19:29:04,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-10-24 19:29:04,870 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:29:04,870 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:29:04,871 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:29:04,871 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:29:04,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1898018613, now seen corresponding path program 1 times [2018-10-24 19:29:04,871 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:29:04,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:29:04,873 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:29:04,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:29:04,873 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:29:04,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:29:05,144 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 19:29:05,294 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:29:05,295 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:29:05,295 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 19:29:05,295 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:29:05,296 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 19:29:05,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 19:29:05,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 19:29:05,297 INFO L87 Difference]: Start difference. First operand 821 states and 1290 transitions. Second operand 6 states. [2018-10-24 19:29:08,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:29:08,979 INFO L93 Difference]: Finished difference Result 2553 states and 4218 transitions. [2018-10-24 19:29:08,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 19:29:08,979 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2018-10-24 19:29:08,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:29:09,001 INFO L225 Difference]: With dead ends: 2553 [2018-10-24 19:29:09,002 INFO L226 Difference]: Without dead ends: 1738 [2018-10-24 19:29:09,012 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 19:29:09,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1738 states. [2018-10-24 19:29:09,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1738 to 1680. [2018-10-24 19:29:09,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1680 states. [2018-10-24 19:29:09,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1680 states to 1680 states and 2538 transitions. [2018-10-24 19:29:09,114 INFO L78 Accepts]: Start accepts. Automaton has 1680 states and 2538 transitions. Word has length 158 [2018-10-24 19:29:09,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:29:09,115 INFO L481 AbstractCegarLoop]: Abstraction has 1680 states and 2538 transitions. [2018-10-24 19:29:09,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 19:29:09,115 INFO L276 IsEmpty]: Start isEmpty. Operand 1680 states and 2538 transitions. [2018-10-24 19:29:09,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-10-24 19:29:09,128 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:29:09,129 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:29:09,130 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:29:09,130 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:29:09,130 INFO L82 PathProgramCache]: Analyzing trace with hash -622646755, now seen corresponding path program 1 times [2018-10-24 19:29:09,131 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:29:09,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:29:09,132 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:29:09,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:29:09,132 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:29:09,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:29:09,405 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 19:29:09,443 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-24 19:29:09,444 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:29:09,444 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 19:29:09,445 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 161 with the following transitions: [2018-10-24 19:29:09,447 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [6], [10], [14], [18], [22], [26], [30], [33], [34], [38], [42], [53], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [171], [175], [179], [183], [187], [191], [195], [199], [210], [214], [218], [222], [233], [237], [241], [245], [249], [253], [257], [268], [272], [283], [287], [298], [309], [313], [317], [321], [325], [329], [333], [344], [348], [352], [356], [360], [364], [368], [372], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [603], [611], [619], [627], [635], [643], [651], [659], [667], [675], [683], [691], [699], [707], [715], [723], [731], [739], [747], [751], [753], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-10-24 19:29:09,537 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 19:29:09,537 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 19:29:26,982 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 19:29:26,984 INFO L272 AbstractInterpreter]: Visited 136 different actions 136 times. Never merged. Never widened. Never found a fixpoint. Largest state had 38 variables. [2018-10-24 19:29:26,998 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:29:26,998 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 19:29:33,123 INFO L232 lantSequenceWeakener]: Weakened 139 states. On average, predicates are now at 81.64% of their original sizes. [2018-10-24 19:29:33,124 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 19:29:36,762 INFO L413 sIntCurrentIteration]: We have 159 unified AI predicates [2018-10-24 19:29:36,763 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 19:29:36,764 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 19:29:36,764 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [6] total 18 [2018-10-24 19:29:36,764 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:29:36,765 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-24 19:29:36,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-24 19:29:36,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2018-10-24 19:29:36,766 INFO L87 Difference]: Start difference. First operand 1680 states and 2538 transitions. Second operand 14 states. [2018-10-24 19:31:22,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:31:22,567 INFO L93 Difference]: Finished difference Result 3652 states and 5496 transitions. [2018-10-24 19:31:22,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-24 19:31:22,567 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 160 [2018-10-24 19:31:22,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:31:22,578 INFO L225 Difference]: With dead ends: 3652 [2018-10-24 19:31:22,578 INFO L226 Difference]: Without dead ends: 1978 [2018-10-24 19:31:22,584 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 172 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=193, Invalid=509, Unknown=0, NotChecked=0, Total=702 [2018-10-24 19:31:22,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1978 states. [2018-10-24 19:31:22,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1978 to 1825. [2018-10-24 19:31:22,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1825 states. [2018-10-24 19:31:22,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1825 states to 1825 states and 2690 transitions. [2018-10-24 19:31:22,745 INFO L78 Accepts]: Start accepts. Automaton has 1825 states and 2690 transitions. Word has length 160 [2018-10-24 19:31:22,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:31:22,746 INFO L481 AbstractCegarLoop]: Abstraction has 1825 states and 2690 transitions. [2018-10-24 19:31:22,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-24 19:31:22,746 INFO L276 IsEmpty]: Start isEmpty. Operand 1825 states and 2690 transitions. [2018-10-24 19:31:22,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-10-24 19:31:22,754 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:31:22,755 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:31:22,755 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:31:22,756 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:31:22,756 INFO L82 PathProgramCache]: Analyzing trace with hash 9901054, now seen corresponding path program 1 times [2018-10-24 19:31:22,756 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:31:22,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:31:22,758 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:31:22,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:31:22,758 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:31:22,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:31:23,275 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 32 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 19:31:23,276 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:31:23,276 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 19:31:23,276 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 171 with the following transitions: [2018-10-24 19:31:23,277 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [6], [9], [10], [14], [18], [22], [26], [30], [33], [34], [38], [42], [53], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [171], [175], [179], [183], [187], [191], [195], [199], [210], [214], [218], [222], [233], [237], [241], [245], [249], [253], [257], [268], [272], [283], [287], [298], [309], [313], [317], [321], [325], [329], [333], [344], [348], [352], [356], [360], [364], [368], [372], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [603], [611], [619], [627], [635], [643], [651], [659], [667], [675], [683], [691], [699], [707], [715], [723], [731], [739], [747], [751], [753], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-10-24 19:31:23,286 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 19:31:23,286 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 19:32:41,911 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 19:32:41,911 INFO L272 AbstractInterpreter]: Visited 140 different actions 548 times. Merged at 7 different actions 21 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 38 variables. [2018-10-24 19:32:41,920 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:32:41,920 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 19:32:50,898 INFO L232 lantSequenceWeakener]: Weakened 43 states. On average, predicates are now at 83.53% of their original sizes. [2018-10-24 19:32:50,898 INFO L411 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-10-24 19:33:06,136 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 19:33:06,142 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 19:33:06,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 07:33:06 BoogieIcfgContainer [2018-10-24 19:33:06,143 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 19:33:06,144 INFO L168 Benchmark]: Toolchain (without parser) took 251459.95 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.8 GB in the end (delta: -2.4 GB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-10-24 19:33:06,145 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 19:33:06,146 INFO L168 Benchmark]: CACSL2BoogieTranslator took 700.46 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-24 19:33:06,146 INFO L168 Benchmark]: Boogie Procedure Inliner took 191.45 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 728.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -826.1 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. [2018-10-24 19:33:06,148 INFO L168 Benchmark]: Boogie Preprocessor took 108.69 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 19:33:06,148 INFO L168 Benchmark]: RCFGBuilder took 3608.69 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 102.5 MB). Peak memory consumption was 102.5 MB. Max. memory is 7.1 GB. [2018-10-24 19:33:06,149 INFO L168 Benchmark]: TraceAbstraction took 246834.46 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.8 GB in the end (delta: -1.7 GB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-10-24 19:33:06,155 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 700.46 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 191.45 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 728.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -826.1 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 108.69 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3608.69 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 102.5 MB). Peak memory consumption was 102.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 246834.46 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.8 GB in the end (delta: -1.7 GB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 556]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 556). Cancelled while BasicCegarLoop was analyzing trace of length 171 with TraceHistMax 4,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 14 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 237 locations, 1 error locations. TIMEOUT Result, 246.7s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 113.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 649 SDtfs, 2973 SDslu, 606 SDs, 0 SdLazy, 2925 SolverSat, 685 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 66.1s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 197 GetRequests, 153 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 8.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1825occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 96.1s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9941908371786415 AbsIntWeakeningRatio, 0.21951219512195122 AbsIntAvgWeakeningVarsNumRemoved, 1051.7560975609756 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 4 MinimizatonAttempts, 248 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 604 NumberOfCodeBlocks, 604 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 600 ConstructedInterpolants, 0 QuantifiedInterpolants, 196356 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 59/61 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown